Temperature effects on condenser microphone's mecano-acoustic properties : experimental characterization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F19%3A00333365" target="_blank" >RIV/68407700:21230/19:00333365 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21260/19:00333365

Result on the web

<a href="http://pub.dega-akustik.de/ICA2019/data/articles/000978.pdf" target="_blank" >http://pub.dega-akustik.de/ICA2019/data/articles/000978.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Temperature effects on condenser microphone's mecano-acoustic properties : experimental characterization

Original language description

Condenser microphones are generally designed for airborne acoustic measurements. Their accurate behaviour is then well understood almost in atmospheric conditions. However, more and more applications, such as acoustic thermometry, gas metrology or thermoacoustics for example, require the use of electrostatic transducers (as sound source or sensors) in gas conditions far from atmospheric ones. A previous experiment using the electrostatic actuator technique already evidenced the influence of static pressure and nature of the gas on a condenser microphones’s frequency response. The same technique is carried out here to characterize the mechanical properties of a 1/4’’ microphone’s membrane in vacuum at temperatures from about 80 K to 300 K. From the results then obtained, the resonance properties of the membrane are expressed as function of the temperature. Then they can be used in global mecano-acoustic modellings of condenser microphones which validity at several temperatures is experimentally checked too. Furthermore, a new global modelling of a condenser microphone coupled to an electrostatic actuator is developed here. Finally, the expected impacts of this work are to provide improved theoretical bases and advanced experimental tools for the deep understanding, the calibration and the design of new electrostatic transducers dedicated to new specific applications.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20303 - Thermodynamics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019

ISBN

978-3-939296-15-7

ISSN

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e-ISSN

2226-7808

Number of pages

6

Pages from-to

7369-7374

Publisher name

Deutsche Gesellschaft für Akustik

Place of publication

Dresden

Event location

Aachen

Event date

Sep 9, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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